Drilling tools and accessories
JF type sword-like backpressure valve

  Arrow back-Pressure Valve Type JF is a sort of  important blowout control tool of  inside of  the drill pipe,It arrow  valve structure ,It's used directly connecbon to drill stem,and can precent high-prdssure of stream from blowing out from drilling tool,)

   Technical parameters of JF type sword-like backpressure valve

TYPE

O.D.

In

(mm)

L.D.

 In

(mm)

Connection

 

API

Overall Length

In

(mm)

Max Working Pressure  Psi (MPa)

JF86

3-3/8(86)

1-11/32(34)

NC26

15-3/4(400)

10000(70)

JF105

4-1/8(105)

1-3/4(45)

NC31

15-3/4(400)

JF121

4-3/4(121)

2-1/4(57)

NC38

19-11/16(500)

JF152

6(152)

2-29/32(74)

NC46

19-11/16(500)

JF162

6-3/8(162)

3-1/4(83)

NC50

21-5/8(550)

JF184

7-1/4(184)

3-7/16(87)

5-1/2FH

21-5/8(550)

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